An Eulerian-Eulerian multiphase solver of the open-source CFD software OpenFoam was used to numerically compute the film cooling investigation on a flat plate with various numbers of deposition. The analysis was performed at different mist loading fractions, droplet diameters and blowing ratios. Various numbers of depositions were configured in the domain at different locations. An increase in the number of depositions at the plate surface raised the turbulence mixing of the fluids. It eventually weakened the film cooling performance. Moreover, the formation of depositions towards upstream after the coolant’s exit hole led to a decreasing film cooling effectiveness. It was also observed that the cooling performance was maximum at the highest blowing ratio, highest loading fraction, lowest droplet diameter and lowest injection angle.

使用开源CFD软件OpenFoam的Eulerian-Eulerian多相求解器，以数值方式计算了具有不同沉积数量的平板上的薄膜冷却研究。该分析是在不同的雾载分数，液滴直径和吹塑比下进行的。在域中的不同位置配置了各种数量的沉积。板表面沉积物数量的增加增加了流体的湍流混合。最终削弱了薄膜的冷却性能。此外，在冷却剂的出口孔之后向上游的沉积物的形成导致膜冷却效率降低。还观察到，在最高吹风比，最高负载率，最低液滴直径和最低喷射角下，冷却性能最高。